CVE-2025-71243Public exploitNetwork attack vector

Unauthenticated code execution via hidden-field injection

Published Feb 19, 2026 · Updated Feb 19, 2026

Code injection in SPIP Saisies pour formulaires 5.4.0 through 5.11.0 allows remote attackers to execute arbitrary server-side code. The saisies_formulaire_charger_generer_hidden_ancienne_valeur_depubliee() function copies the untrusted _anciennes_valeurs parameter into a hidden field without escaping, and SPIP renders that field through a PHP template with script filtering disabled. The flaw is reachable without authentication only when a publicly accessible Saisies-powered form is present, granting execution under the web server account.

CVSS severity9.3
Critical
EPSS probability5.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in SPIP Saisies pour formulaires 5.4.0 through 5.11.0 allows remote attackers to execute arbitrary server-side code. The saisies_formulaire_charger_generer_hidden_ancienne_valeur_depubliee() function copies the untrusted _anciennes_valeurs parameter into a hidden field without escaping, and SPIP renders that field through a PHP template with script filtering disabled. The flaw is reachable without authentication only when a publicly accessible Saisies-powered form is present, granting execution under the web server account.

The record

CVE
CVE-2025-71243
Published
Feb 19, 2026
Updated
Feb 19, 2026
Vendor
SPIP
Product
Saisies pour formulaires
Classifications
CWE-94, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 19, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.4.0 <5.11.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

SPIP · Saisies pour formulairesversion=5.4.0 <5.11.1

Published CVSS scores

9.3VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
9.8VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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